The effects of image compression on quantitative measurements of digital panoramic radiographs

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dc.contributor.authorYasar, Fusun
dc.contributor.authorApaydin, Burcu
dc.contributor.authorYilmaz, Hasan-Huseyin
dc.date.accessioned2020-03-26T18:31:41Z
dc.date.available2020-03-26T18:31:41Z
dc.date.issued2012
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractObjectives: The aims of this study were to explore how image compression affects density, fractal dimension, linear and angular measurements on digital panoramic images and assess inter and intra-observer repeatability of these measurements. Study Design: Sixty-one digital panoramic images in TIFF format (Tagged Image File Format) were compressed to JPEG (Joint Photographic Experts Group) images. Two observers measured gonial angle, antegonial angle, mandibular cortical width, coronal pulp width of maxillary and mandibular first molar, tooth length of maxillary and mandibular first molar on the left side of these images twice. Fractal dimension of the selected regions of interests were calculated and the density of each panoramic radiograph as a whole were also measured on TIFF and JPEG compressed images. Intra-observer and inter-observer consistency was evaluated with Cronbach's alpha. Paired samples t-test and Kolmogorov-Smirnov test was used to evaluate the difference between the measurements of TIFF and JPEG compressed images. Results: The repeatability of angular measurements had the highest Cronbach's alpha value (0.997). There was statistically significant difference for both of the observers in mandibular cortical width (MCW) measurements (1st ob. p: 0.002; 2nd ob. p: 0.003), density (p<0.001) and fractal dimension (p<0.001) between TIFF and JPEG images. There was statistically significant difference for the first observer in antegonial angle (1st ob p<0.001) and maxillary molar coronal pulp width (1st ob. p<0.001) between JPEG and TIFF files. Conclusions: The repeatability of angular measurements is better than linear measurements. Mandibular cortical width, fractal dimension and density are affected from compression. Observer dependent factors might also cause statistically significant differences between the measurements in TIFF and JPEG images.en_US
dc.identifier.doi10.4317/medoral.17912en_US
dc.identifier.endpageE1081en_US
dc.identifier.issn1698-4447en_US
dc.identifier.issue6en_US
dc.identifier.pmid22926465en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpageE1074en_US
dc.identifier.urihttps://dx.doi.org/10.4317/medoral.17912
dc.identifier.urihttps://hdl.handle.net/20.500.12395/28513
dc.identifier.volume17en_US
dc.identifier.wosWOS:000314401800026en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherMEDICINA ORAL S Len_US
dc.relation.ispartofMEDICINA ORAL PATOLOGIA ORAL Y CIRUGIA BUCALen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectDigital panoramic radiographyen_US
dc.subjectimage compressionen_US
dc.subjectlinear measurementsen_US
dc.subjectangular measurementsen_US
dc.subjectfractal dimensionen_US
dc.titleThe effects of image compression on quantitative measurements of digital panoramic radiographsen_US
dc.typeArticleen_US

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